Lighting attachment for gaseous-fuel burners.



0. E. HEPT. LIGHTING ATTACHMENT FOR GASBOUS FUEL BUBNERS APPLICATION FILED JUNE 5, 1908.

Patented June 22, 1909.

2 SHEETS-SHEET 1.

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G. E. HEFT.

LIGHTING ATTACHMENT FOR GASEOUS FUEL BURNERS.

APPLICATION TILED JUNE 5,1908.

925,808. Patented June 22, 1909.

2 SHEETS-SHEET 2.

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CHARLES E. HEFT, O-F PORTLAND, OREGON, ASSIGNOR OF ONE-HALF TO LETTIE B. MARK- HAM, OF GRAND RAPIDS, MICHIGAN.

LIGHTING ATTACHMENT FOR GASEOUS-FUEL BURNERS.

Specification of Letters Patent.

Patented June 22, 1909.

T 0 all whom it may concern: Be it known that I, CHARLES E. HEFT, a citizen of the United States, residing at Portland, in the county of Multnom ah and State of Oregon, have invented certain new and useful Improvements in Lighting Attachments for Gaseous-Fuel Burners; and ldo hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable ot iers skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in automatic lighting attachments for gas stoves and other burners, and com rehends an electrically operated device whic can easily be applied to any burner 'or to a series of burners, andisso constructed as to render the parts liable to comparatively little wear and destruction, while at the same time, they are quick and eilectiv'e in their operation, and easily, when worn out, replaced.

One of the objects of the invention is to provide a device of the character mentioned, which employs movable electrodes so that neither contact shall. be subject to heat,

thus making it unnecessary to use platinum contacts as is done in thestructures of this sort now in use. I

Other objects and advantages will be ap parent from the following detailed descrip-- tion, when read in conjunction with the ap pended claims and the drawings hereto annexed, in which,

Figure 1 is a top plan view of a burner with my device in operative osition. Fig. 2 1s a pers ective view of the lighting attach- Inent. 1g. 3 is a longitudinal vertical section of the same. Fig. 4 is a front elevation of the operating parts. Fig. 5 is a rear elevatlon of the same. Figs. 6 and 7 are do- I tailed views of the movable electrodes.

Referring more particularly to the drawmgs, A designates a gas burner of the usual type and B the supply pipe therefor. (J is t e operating lever for the su ply valve, and is provided with a lug a, as shown in Fig. 1. Operatively connected to the lighter, is a connecting rod 1) which has an offset portion 6 adapted toliefin the path of movement of the lug a. The offset portion b is beveled as-shown at 6 said beveled part being arranged to engage the-pin b for a purpose hereinafter to be described. A spring 6 is suitably secured to a post 0 and bears from the lever E by any suitable subextend through the casting from the front against the connecting rod 1), serving to hold the same normally lowered.

The lighter includes a casting D within which are secured the tubes D and 19 said tubes being insulated from the casting by any suitable substance (1. Leading from tube D is a port D which connects with the supply pipe B by a screw threaded coupling D roperly ositioned to close the port Di 1s 'a rotary va ve D having the port D therein. Fast on the valve D is the lever D which is pivoted to the connecting rod 1). D is a centering screw supported in an armof the casting, to hold the valve D down in proper position, and D is a coil s ring for retaining valve I) normally close the ends of the spring being secured to the valve and a portion of the casting res ectively.

Supported inthe tu e D is a shaft E carrying. the contact member E at one end, and the'crank E at the other end. The crank E is provided with a pin E? which engages a slot E in a lever E said lever being fixed on the valve D The pin E is insulated stance E.

orted on the tube D 1s a bracket F,

Supp roper y insulated as shown at F The racket carries anarm F to which ispivoted the contact member F Aleaf spring F 1s securedto arm F and bears against the lower edge of contact member Fflwhereby it is centered in proper pos'1t1on, the sprmg efiecting return of the contact member, whenever it is moved away from its normal position. 1

Binding posts H, H are provided, which i to the rear thereof and are separated therefrom by proper insulating matenaL. The circuit followed by the current 1s as follows: from a proper source to binding post H, to tube D to shaft E, to contact members E and F successively, to arm F 'and bracket F, to tube D to binding post H and back to the current supply.

The operation will readily be apparent: The main valve being opened to admit gas to the burner, connecting-rod b is ulled over by lug a, and as rod 1) is pivotal y secured to lever D this serves to turn the valve D and open port D, thus permitting a supplemental supply of gas to The rocking of v ve D turns the shaft E through lever E and crank E and contact iass in through tube D a 110 pass thereunder, the spring D comes into action and returns the parts tonormal posi+ tion, closing valve 1).

It will be understood that I have disclosed the invention in'what I deem a preferred embodiment, but I do not Wish to be confinedto the exact structure herein shown, as various changes and modifications may be employed without departing from the spirit an intent of my invention.

IVhat I claim, and desire to secure by Let; ters-Patent is 1. A lighting attachment for gaseous fuel burners including a gas'tube, a valve controlling the same, a lever secured to said valve, a connecting-rod pivoted to said lever and operatively associated with the main burner valve, a shaft carrying a contact, operating means between said first-mentioned valve and said shaft, and means for returning said first-mentioned valve to normal position at th? limit of opening movement of the main va ve.

I 2. A lighting attachment for gaseous fuel burners including a gas tube, a valve controlling the same, a lever secured to said valve, a connecting rod pivoted to said lever, an offset portion on said connecting rod and beveled on one side, a lug carried by the main burner valve and adapted to engage said offset portion, a pin positioned for engagement with said beveled portion, a second lever secured to the first mentioned valve and connected to a crank shaft, a contact carried by said shaft, a second contact pivotally sup ported in the path of movement of said first mentioned contact, and means for returning both of said contacts to normal" position.

In testimony whereof, I aflix my signature, in the presence of two subscribing witnesses.

CHARLES: E. HEFT.

Witnesses:

GUssIE RosENsrErN, D. S. DUFUR. 

